【摘要】 为防止工业振源引起的地面振动对古建筑结构的危害,本课题对古建筑结构的容许振动、动力特性和响应计算、古建筑结构现状的判断、地面振动传播等进行了研究。通过对主要的工业振源和有代表性的古建筑的大量现场实测、室内实验和理论分析研究,取得了以下主要成果:(1)提出以疲劳极限作为确定古建筑结构容许振动的依据;(2)建立了殿堂、楼阁、古塔、钟鼓楼、宫门等的动力特性计算模型;(3)应用波动理论判断古建筑结构的应力现状;(4)得出不同土层中振源频率随距离变化的规律。以上成果均已纳入国家标准《古建筑防工业振动技术规范》。更多还原

【Abstract】 In order to protect historic building structures from the harmful effects of ground vibration induced by man-made sources this subject has carried on investigation in allowable vibration of historic building structures, calculation of response,judgment of present situation,propagation of ground vibration and etc.Through a lot of field and laboratory tests and the theoretical analysis of major man-made sources and nationally survey of representative historic buildings,the main results have been achieved as follows;(a)The fatigue limit is taken as the base of deter- mining the allowable vibration of historic building structures;(b) The models are set up for calculating the dynamic characteristics of palatial hall,storeyed building,ancient pagoda,bell-tower,drum-tower,palace gate and etc;(c) The theory of wave motion is applied to judge the present condition of historic building structural stress;(d) Law of the frequency of vibration source varing with the distance in different kinds of soil layer is obtained.The above results have been adopted by the national standard-Technical Specifications for Protection of Historic Buildings against Man-made Vibration.更多还原